A person could surely loose weight due to Mal-
digestion. Actually, in my opinion, the mal-
absorption and digestion sort of go together. If one acts up the other will as well.
I would try taking some digestive enzymes and also a good pro-biotic to put the friendly bacteria in your system, this might be of some help.
To put it another way, if you don't digest, you don't absorb, and if you don't abosorb, you body is not getting all the nutrients it needs to stay healthy.